+# if USE_WIDEC_SUPPORT
+/*---------------------------------------------------------------------------
+| Facility : libnform
+| Function : int form_driver_w(FORM * form,int type,wchar_t c)
+|
+| Description : This is the workhorse of the forms system.
+|
+| Input is either a key code (request) or a wide char
+| returned by e.g. get_wch (). The type must be passed
+| as well,so that we are able to determine whether the char
+| is a multibyte char or a request.
+
+| If it is a request, the form driver executes
+| the request and returns the result. If it is data
+| (printable character), it enters the data into the
+| current position in the current field. If it is not
+| recognized, the form driver assumes it is an application
+| defined command and returns E_UNKNOWN_COMMAND.
+| Application defined command should be defined relative
+| to MAX_FORM_COMMAND, the maximum value of a request.
+|
+| Return Values : E_OK - success
+| E_SYSTEM_ERROR - system error
+| E_BAD_ARGUMENT - an argument is incorrect
+| E_NOT_POSTED - form is not posted
+| E_INVALID_FIELD - field contents are invalid
+| E_BAD_STATE - called from inside a hook routine
+| E_REQUEST_DENIED - request failed
+| E_NOT_CONNECTED - no fields are connected to the form
+| E_UNKNOWN_COMMAND - command not known
++--------------------------------------------------------------------------*/
+NCURSES_EXPORT(int)
+form_driver_w(FORM *form, int type, wchar_t c)
+{
+ const Binding_Info *BI = (Binding_Info *) 0;
+ int res = E_UNKNOWN_COMMAND;
+
+ T((T_CALLED("form_driver(%p,%d)"), (void *)form, (int)c));
+
+ if (!form)
+ RETURN(E_BAD_ARGUMENT);
+
+ if (!(form->field))
+ RETURN(E_NOT_CONNECTED);
+
+ assert(form->page);
+
+ if (c == (wchar_t)FIRST_ACTIVE_MAGIC)
+ {
+ form->current = _nc_First_Active_Field(form);
+ RETURN(E_OK);
+ }
+
+ assert(form->current &&
+ form->current->buf &&
+ (form->current->form == form)
+ );
+
+ if (form->status & _IN_DRIVER)
+ RETURN(E_BAD_STATE);
+
+ if (!(form->status & _POSTED))
+ RETURN(E_NOT_POSTED);
+
+ /* check if this is a keycode or a (wide) char */
+ if (type == KEY_CODE_YES)
+ {
+ if ((c >= MIN_FORM_COMMAND && c <= MAX_FORM_COMMAND) &&
+ ((bindings[c - MIN_FORM_COMMAND].keycode & Key_Mask) == c))
+ BI = &(bindings[c - MIN_FORM_COMMAND]);
+ }
+
+ if (BI)
+ {
+ typedef int (*Generic_Method) (int (*const) (FORM *), FORM *);
+ static const Generic_Method Generic_Methods[] =
+ {
+ Page_Navigation, /* overloaded to call field&form hooks */
+ Inter_Field_Navigation, /* overloaded to call field hooks */
+ NULL, /* Intra-Field is generic */
+ Vertical_Scrolling, /* Overloaded to check multi-line */
+ Horizontal_Scrolling, /* Overloaded to check single-line */
+ Field_Editing, /* Overloaded to mark modification */
+ NULL, /* Edit Mode is generic */
+ NULL, /* Field Validation is generic */
+ NULL /* Choice Request is generic */
+ };
+ size_t nMethods = (sizeof(Generic_Methods) / sizeof(Generic_Methods[0]));
+ size_t method = (size_t) (BI->keycode >> ID_Shft) & 0xffff; /* see ID_Mask */
+
+ if ((method >= nMethods) || !(BI->cmd))
+ res = E_SYSTEM_ERROR;
+ else
+ {
+ Generic_Method fct = Generic_Methods[method];
+
+ if (fct)
+ res = fct(BI->cmd, form);
+ else
+ res = (BI->cmd) (form);
+ }
+ }
+#ifdef NCURSES_MOUSE_VERSION
+ else if (KEY_MOUSE == c)
+ {
+ MEVENT event;
+ WINDOW *win = form->win ? form->win : StdScreen(Get_Form_Screen(form));
+ WINDOW *sub = form->sub ? form->sub : win;
+
+ getmouse(&event);
+ if ((event.bstate & (BUTTON1_CLICKED |
+ BUTTON1_DOUBLE_CLICKED |
+ BUTTON1_TRIPLE_CLICKED))
+ && wenclose(win, event.y, event.x))
+ { /* we react only if the click was in the userwin, that means
+ * inside the form display area or at the decoration window.
+ */
+ int ry = event.y, rx = event.x; /* screen coordinates */
+
+ res = E_REQUEST_DENIED;
+ if (mouse_trafo(&ry, &rx, FALSE))
+ { /* rx, ry are now "curses" coordinates */
+ if (ry < sub->_begy)
+ { /* we clicked above the display region; this is
+ * interpreted as "scroll up" request
+ */
+ if (event.bstate & BUTTON1_CLICKED)
+ res = form_driver(form, REQ_PREV_FIELD);
+ else if (event.bstate & BUTTON1_DOUBLE_CLICKED)
+ res = form_driver(form, REQ_PREV_PAGE);
+ else if (event.bstate & BUTTON1_TRIPLE_CLICKED)
+ res = form_driver(form, REQ_FIRST_FIELD);
+ }
+ else if (ry > sub->_begy + sub->_maxy)
+ { /* we clicked below the display region; this is
+ * interpreted as "scroll down" request
+ */
+ if (event.bstate & BUTTON1_CLICKED)
+ res = form_driver(form, REQ_NEXT_FIELD);
+ else if (event.bstate & BUTTON1_DOUBLE_CLICKED)
+ res = form_driver(form, REQ_NEXT_PAGE);
+ else if (event.bstate & BUTTON1_TRIPLE_CLICKED)
+ res = form_driver(form, REQ_LAST_FIELD);
+ }
+ else if (wenclose(sub, event.y, event.x))
+ { /* Inside the area we try to find the hit item */
+ int i;
+
+ ry = event.y;
+ rx = event.x;
+ if (wmouse_trafo(sub, &ry, &rx, FALSE))
+ {
+ int min_field = form->page[form->curpage].pmin;
+ int max_field = form->page[form->curpage].pmax;
+
+ for (i = min_field; i <= max_field; ++i)
+ {
+ FIELD *field = form->field[i];
+
+ if (Field_Is_Selectable(field)
+ && Field_encloses(field, ry, rx) == E_OK)
+ {
+ res = _nc_Set_Current_Field(form, field);
+ if (res == E_OK)
+ res = _nc_Position_Form_Cursor(form);
+ if (res == E_OK
+ && (event.bstate & BUTTON1_DOUBLE_CLICKED))
+ res = E_UNKNOWN_COMMAND;
+ break;
+ }
+ }
+ }
+ }
+ }
+ }
+ else
+ res = E_REQUEST_DENIED;
+ }
+#endif /* NCURSES_MOUSE_VERSION */
+ else if (type == OK)
+ {
+ res = Data_Entry_w(form, c);
+ }
+
+ _nc_Refresh_Current_Field(form);
+ RETURN(res);
+}
+# endif /* USE_WIDEC_SUPPORT */
+
projects / ncurses.git / blobdiff